Patent EA-001558-B1 (EA)
Title: Feesing device for electrical shaft furnaces
Inventor: SCHMALE KLAUS
IPC: F27B3/18
Filed: 1998-11-12
Abstract: 1. A feeding device for closed shaft furnaces connected to a gas-extracting device, in particular for low shaft furnaces for melting steel scrap, having a transporting device, which leads to the head of the upper furnace vessel and is integrated at least partially in the furnace atmosphere, and a distributing device for distributing the charge, wherein a carousel (31) which can be charged by a conveying device (21) is provided in the furnace head (13), wherein the carousel (31), in the furnace head (13), is guided rotatably on a path (65), fastened on the casing (18) of the upper furnace vessel (12), above the gas-extracting device (17), and wherein the carousel (31) has shutter elements (32) connected to actuators (41). 2. The feeding device as claimed in claim 1, wherein the shutter elements (32) are segments (34) of a ring (35) with a depth (c), where c = 0.1 to 1.0 x R, where R = radius of the furnace head, and with a width B = 1/4 to 1/16 x U, where U = circumference of the furnace head. 3. The feeding device as claimed in claim 1, wherein the shutter elements (32) are tines (33) which tape conically to their tip. 4. The feeding device as claimed in one of the above-mentioned claims, wherein levers (37) are provided on the shutter elements (32), in the region of the tilting spindle (II) of the latter, and can be connected to the actuators (41). 5. The feeding device as claimed in claim 1, wherein the actuators (41) are drives (43) having a piston cylinder unit (42). 6. The feeding device as claimed in claim 1, wherein the actuators (41) are rotary drives (44). 7. The feeding device as claimed in claim 6, wherein the rotary drives (44) can be connected to the shutter elements (32) via cables (47). 8. The feeding device as claimed in claim 1, wherein damping elements (51) are arranged on the shutter elements (32) and, in the closed position of the shutter elements (32), damp impact of the charge coming into contact therewith. 9. The feeding device as claimed in one of the above-mentioned claims, wherein, in the case of a shaft furnace with a central tube (19) which is arranged coaxially with the cylindrical upper furnace vessel (12) and is intended for guiding material and for receiving electrodes, the ends of the shutter elements (32) are supported on supporting elements (61) fastened on the central tube (19). 10. The feeding device as claimed in claim 9, wherein the supporting elements (61) may be connected in a form-fitting manner to the shutter elements (32), e.g. are configured as rotary levers (62). 11. The feeding device as claimed in claim 9, wherein the shutter elements (32) have rotary spindles (II) which are arranged such that they can be rotated about shafts (38) and which are oriented concentrically with the furnace axis (I), and wherein the shutter elements (32) are configured as double-wing shutters (36) which are supported, in the region of the rotary spindle (II), on supporting elements (61) arranged on the inner wall of the upper furnace vessel (12) and the outer wall of the central tube (19). 12. The feeding device as claimed in claim 11, wherein the supporting elements (61) are designed as rails (63) on which wheels (64) roll, said wheels being connected to the rotary spindles (II) of the shutter elements (32). 13. The feeding device as claimed in claim 4, wherein the drives (42, 43) are connected to a measuring and regulating device (45) by means of which each individual shutter (32) can be actuated. 14. The feeding device as claimed in claim 13, wherein the measuring and regulating device (45) is connected in control terms to a stock-level measuring means (46).